Ok? So around here a "Beefer" is a beef cow... We use the term as a combination of Beef and Heifer (young female beef cow).
Depending on how many you have or how long you intend on doing this... a small hobby farm size spreader like in the link I shared may be a good investment for you.
I will also add that I would only apply to plots where you will be using tillage to work that material into the soil. This puts that material down where it will help the plants the most AND helps minimize any run-off/contamination. I am not sure what the fertilizer value of it will/would be... I guess you could say... I don't know SHAT! (Auto-correct).